What is the definition of lacrimal glands?
A gland that secretes tears. The lacrimal glands are found in the upper, outer part of each eye socket.
What are the parts of lacrimal gland?
The lacrimal gland consists of two connecting parts: the larger orbital part and the smaller palpebral part. The gland together with its associated drainage system of ducts form the lacrimal apparatus. This article will discuss the anatomy and function of the lacrimal gland.
What is Dacry?
Dacryo-: A combining form denoting tears, as in dacryocyst (tear sac) and dacryocystorhinostomy (surgery to open up a tear duct). From the Greek dakry meaning “a tear.”
What Innervates lacrimal glands?
Nerve supply The lacrimal gland is innervated by the lacrimal nerve, which is the smallest branch of the ophthalmic nerve, itself a branch of the trigeminal nerve (CN V). After the lacrimal nerve branches from the ophthalmic nerve it receives a communicating branch from the zygomatic nerve.
What is the name of tear gland?
The tear glands (lacrimal glands), located above each eyeball, continuously supply tear fluid that’s wiped across the surface of your eye each time you blink your eyelids.
What does ot o mean?
ear
Oto-: Prefix meaning ear, as in otology (the study and medical care of the ear) and otoplasty (plastic surgery to reshape the outer ear).
What does the medical term myring o mean?
tympanic membrane
, myring- Combining forms indicating the tympanic membrane.
What is the tear film of the eye?
The tear film is a thin fluid layer covering the ocular surface. It is responsible for ocular surface comfort, mechanical, environmental and immune protection, epithelial health and it forms smooth refractive surface for vision.
What nerve stimulates tear production?
The great (superficial) petrosal nerve from cranial nerve VII provides autonomic innervation to the lacrimal gland. It is responsible for the production of much of the aqueous portion of the tear film.
What is the opening in the eye?
The pupil is the opening in the coloured part of the eye (iris). It allows light to pass to the lens. The iris controls the size of the pupil in response to light outside the eye so that the proper amount of light is let into the eye. The lens is normally clear and is located behind the iris.
What is the medical definition of the lacrimal gland?
Medical Definition of lacrimal gland. : an acinous gland that is about the size and shape of an almond, secretes tears, and is situated laterally and superiorly to the bulb of the eye in a shallow depression on the inner surface of the frontal bone.
Which is part of the eye secretes lacrimal fluid?
The lacrimal glands are serous type exocrine glands that secrete lacrimal fluid onto the surfaces of the conjunctiva and cornea of the eye. Lacrimal fluid acts to the clean, nourish and lubricate the eyes.
When does the lacrimal gland secrete tears?
Lacrimal glands secrete during emotional weeping and when the eye is irritated. The eye is normally kept wet by tiny accessory lacrimal glands in the conjunctiva. An almond-shaped gland that secretes tears. Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc.
Which is the main artery supplying the lacrimal gland?
The main arterial supply of the lacrimal gland is by the lacrimal artery, which is a branch of the ophthalmic artery (from the internal carotid artery). The gland is also sometimes supplied by the infraorbital artery which is a branch of the maxillary artery (from the external carotid artery).